"They attached a shaped charge to a balistic missile? Why would anyone do that, you ask..."
Without being to specific about it. The only reason to place a shape charge on a missile is to destroy it or the warhead. When I was in Italy they had us do drills every month to practice placing 15 lb shape charges on the noses of the missiles we were guarding there. If all ofthe charges had to ever go off there would have been a new lake in Northern Italy.